package com.njwb.day11.dvd;

import java.util.ArrayList;
import java.util.Map;

interface DvdService {
    String add(String name);
    String delete(String name);
    String select(String name);
    String loan(String name);
    String returns(String name);
    Map<String,Dvds> showdesc();
    void moren();
}
